General Notes On Disassembly; Preparation - Xerox 3450B - Phaser B/W Laser Printer Service Manual

General Notes on Disassembly

Preparation

Before you begin any Removal and Replacement Procedure:
1. Switch OFF the printer power and disconnect the power cord from the wall
outlet.
2.
Remove the Imaging Unit and protect it from exposure to light by covering it
with a light proof bag or by placing it in a light-tight container. Disconnect all
computer interface cables from the printer.
3.
Wear an electrostatic discharge wrist strap to help prevent damage to the sensitive
electronics of the printer circuit boards.
4.
Remove the Fuser Assembly or wait at least 5 minutes after you have switched
OFF printer power for the Fuser to cool before you work on or around the Fuser.
5.
Tray 2 can interfere with the removal of many printer parts. Remove Tray 2
before further disassembly.
Note
Part names that appear in the disassembly procedures may not exactly match the
names that appear in the Parts List. For example; a part called the Registration
Transport Assembly may appear on the Parts List as Assembly, Transport Regi.
Caution
Many parts are secured by plastic tabs. DO NOT over flex or force these parts.
Do not over torque the screws threaded into plastic parts.
Always use the correct type and size screw. Using the wrong screw can damage
tapped holes. Do not use excessive force to either remove or install either a screw
or a printer part.
A spring hook is required for removal and replacement of the various springs in
the printer. Springs can be damaged using pliers or other tools for this task.
Warning
Unplug the AC power cord from the wall outlet before removing any printer part.
Notations in the disassembly text
■
The notation "(item X)" points to a numbered callout in the illustration
corresponding to the disassembly procedure being performed.
■
The notation "PLX.X.X" indicates that this component is listed in the Service
Parts List.
■
Bold arrows in an illustration show direction of movement when removing or
replacing a component.
Service Parts Disassembly 8-3